| Round 1        | Round 2        | Round n
------ | -------------- | -------------- | --------------
Game 1 | Team1 vs Team2 | Team3 vs Team5 | Team? vs Team?
Game 2 | Team3 vs Team4 | Team1 vs Team6 | Team? vs Team?
Game n | Team? vs Team? | Team? vs Team? | Team? vs Team?

from constraint import *

problem = Problem()
problem.addVariable("Activity", [i for i in range(1, 22+1)])
problem.addVariables(["Team1", "Team2"], [i for i in range(1, 42+1)])
problem.addVariable("Round", [i for i in range(1, 22+1)])
problem.addConstraint(lambda a, b: a != b, ("Team1", "Team2"))
???